Stable Silicene in Graphene/Silicene Van der Waals Heterostructures

Geng Li; Lizhi Zhang; Wenyan Xu; Jinbo Pan; Shiru Song; Yi Zhang; Haitao Zhou; Yeliang Wang; Lihong Bao; Yu Yang Zhang; Shixuan Du; Min Ouyang; Sokrates T. Pantelides; Hong Jun Gao

doi:10.1002/adma.201804650

Stable Silicene in Graphene/Silicene Van der Waals Heterostructures

Geng Li, Lizhi Zhang, Wenyan Xu, Jinbo Pan, Shiru Song, Yi Zhang, Haitao Zhou, Yeliang Wang, Lihong Bao, Yu Yang Zhang, Shixuan Du^*, Min Ouyang, Sokrates T. Pantelides, Hong Jun Gao

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

96 Citations (Scopus)

Abstract

Silicene-based van der Waals heterostructures are theoretically predicted to have interesting physical properties, but their experimental fabrication has remained a challenge because of the easy oxidation of silicene in air. Here, the fabrication of graphene/silicene van der Waals heterostructures by silicon intercalation is reported. Density functional theory calculations show weak interactions between graphene and silicene layers, confirming the formation of van der Waals heterostructures. The heterostructures show no observable damage after air exposure for extended periods, indicating good air stability. The I–V characteristics of the vertical graphene/silicene/Ru heterostructures show rectification behavior.

Original language	English
Article number	1804650
Journal	Advanced Materials
Volume	30
Issue number	49
DOIs	https://doi.org/10.1002/adma.201804650
Publication status	Published - 6 Dec 2018
Externally published	Yes

Keywords

density functional theory
graphene
scanning tunneling microscopy
silicene
van der Waals heterostructures

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10.1002/adma.201804650

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title = "Stable Silicene in Graphene/Silicene Van der Waals Heterostructures",

abstract = "Silicene-based van der Waals heterostructures are theoretically predicted to have interesting physical properties, but their experimental fabrication has remained a challenge because of the easy oxidation of silicene in air. Here, the fabrication of graphene/silicene van der Waals heterostructures by silicon intercalation is reported. Density functional theory calculations show weak interactions between graphene and silicene layers, confirming the formation of van der Waals heterostructures. The heterostructures show no observable damage after air exposure for extended periods, indicating good air stability. The I–V characteristics of the vertical graphene/silicene/Ru heterostructures show rectification behavior.",

keywords = "density functional theory, graphene, scanning tunneling microscopy, silicene, van der Waals heterostructures",

author = "Geng Li and Lizhi Zhang and Wenyan Xu and Jinbo Pan and Shiru Song and Yi Zhang and Haitao Zhou and Yeliang Wang and Lihong Bao and Zhang, {Yu Yang} and Shixuan Du and Min Ouyang and Pantelides, {Sokrates T.} and Gao, {Hong Jun}",

note = "Publisher Copyright: {\textcopyright} 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2018",

month = dec,

day = "6",

doi = "10.1002/adma.201804650",

language = "English",

volume = "30",

journal = "Advanced Materials",

issn = "0935-9648",

publisher = "Wiley-Blackwell",

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T1 - Stable Silicene in Graphene/Silicene Van der Waals Heterostructures

AU - Li, Geng

AU - Zhang, Lizhi

AU - Xu, Wenyan

AU - Pan, Jinbo

AU - Song, Shiru

AU - Zhang, Yi

AU - Zhou, Haitao

AU - Wang, Yeliang

AU - Bao, Lihong

AU - Zhang, Yu Yang

AU - Du, Shixuan

AU - Ouyang, Min

AU - Pantelides, Sokrates T.

AU - Gao, Hong Jun

PY - 2018/12/6

Y1 - 2018/12/6

N2 - Silicene-based van der Waals heterostructures are theoretically predicted to have interesting physical properties, but their experimental fabrication has remained a challenge because of the easy oxidation of silicene in air. Here, the fabrication of graphene/silicene van der Waals heterostructures by silicon intercalation is reported. Density functional theory calculations show weak interactions between graphene and silicene layers, confirming the formation of van der Waals heterostructures. The heterostructures show no observable damage after air exposure for extended periods, indicating good air stability. The I–V characteristics of the vertical graphene/silicene/Ru heterostructures show rectification behavior.

AB - Silicene-based van der Waals heterostructures are theoretically predicted to have interesting physical properties, but their experimental fabrication has remained a challenge because of the easy oxidation of silicene in air. Here, the fabrication of graphene/silicene van der Waals heterostructures by silicon intercalation is reported. Density functional theory calculations show weak interactions between graphene and silicene layers, confirming the formation of van der Waals heterostructures. The heterostructures show no observable damage after air exposure for extended periods, indicating good air stability. The I–V characteristics of the vertical graphene/silicene/Ru heterostructures show rectification behavior.

KW - density functional theory

KW - graphene

KW - scanning tunneling microscopy

KW - silicene

KW - van der Waals heterostructures

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U2 - 10.1002/adma.201804650

DO - 10.1002/adma.201804650

M3 - Article

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AN - SCOPUS:85055718468

SN - 0935-9648

VL - 30

JO - Advanced Materials

JF - Advanced Materials

IS - 49

M1 - 1804650

ER -

Stable Silicene in Graphene/Silicene Van der Waals Heterostructures

Abstract

Keywords

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